Characteristics: Made of high quality aluminum alloy, precision CNC machining, surface anode antioxidation machining. With a lever that allows you to tighten the ball head, tripod or monopod. The knob type design provides great versatility. You can conveniently adjust the clamp width from 38mm to 47mm. Safe relief grooves to protect the camera from falls in the event of an accident. With 1/4 to 3/8 adapter screw and 1/4 quick release plate, adapted to Arca Swiss standard, compatible with standard Arca Swiss quick release plates, ball heads and tripods such as RSS, for Arca Swiss, Kirk, Wimberley, Markins, Sirui, SUNWAYFOTO, Benro, etc. Technical data: Brand: Andoer Model: CL50LS Material: aluminum alloy; Kolor: matte black Mounting screw: 3/8 (with 3/8 to 1/4 adapter) Compatibility: for Arca Swiss standard all quick release plates, ball heads and tripods Item Size: 8,9*5*1,9 cm/3,5*2*0,8 inch Product Weight: 118g/4.2 oz Package Size: 9 * 8,3 * 3,4 cm / 3,5 * 3,3 * 1,3 inch Package Weight: 137g/4.8oz List of packages: 1 * CL50LS quick release clamp and quick release plate;